.btn {
    color: #fff;
    background-color: #28a745;
    border-color: #28a745;
    width: fit-content;
    margin: 0.5em 1em;
    font-weight: bold;
    padding: 0.2em 1em;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;

    user-select: none;
    cursor: pointer;
}

.btn > a:visited,
.btn > a:link {
    color: #fff;
    text-decoration: none;
}

.btn > form {
    margin: unset;
}

.btn > form > input[type="submit"] {
    background-color: unset;
    border: unset;
    color: unset;
    font-size: unset;
    padding: unset;
    appearance: none;
    font-weight: bold;
    cursor: pointer;
}

.btn > form > input[type="submit"]:focus {
    outline: none;
}

.paper {
    box-shadow: 4px 5px 4px 2px #aaa;
    padding: 2em;
    border-style: solid;
    border-width: 1px;
    border-color: #eee;
    display: flex;
    flex-direction: column;
    background-color: #fff;
    min-height: 50vh;

    margin: 1em 2em;
    justify-content: flex-start;
}
